diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
index 8502240d15..e161e1a562 100644
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -9,29 +9,3 @@ To help us merge your PR, make sure to follow the instructions below:
 -->
 
 #### Description of what you did:
-
-<!--
-Replace [ ] by [x] to check these checkboxes!
--->
-
-#### My PR is a:
-
-- [ ] 💥 Breaking change
-- [ ] 🐛 Bug fix
-- [ ] 💅 Enhancement
-- [ ] 🚀 New feature
-
-#### Main update on the:
-
-- [ ] Admin
-- [ ] Documentation
-- [ ] Framework
-- [ ] Plugin
-
-#### Manual testing done on the following databases:
-
-- [ ] Not applicable
-- [ ] MongoDB
-- [ ] MySQL
-- [ ] Postgres
-- [ ] SQLite
diff --git a/docs/.vuepress/config.js b/docs/.vuepress/config.js
index e921c2ca85..fb746ff47e 100644
--- a/docs/.vuepress/config.js
+++ b/docs/.vuepress/config.js
@@ -205,6 +205,7 @@ module.exports = {
             '/3.0.0-beta.x/guides/custom-data-response',
             '/3.0.0-beta.x/guides/custom-admin',
             '/3.0.0-beta.x/guides/client',
+            '/3.0.0-beta.x/guides/is-owner',
             '/3.0.0-beta.x/guides/draft',
             '/3.0.0-beta.x/guides/scheduled-publication',
             '/3.0.0-beta.x/guides/slug',
diff --git a/docs/3.0.0-beta.x/guides/is-owner.md b/docs/3.0.0-beta.x/guides/is-owner.md
new file mode 100644
index 0000000000..5bd136e576
--- /dev/null
+++ b/docs/3.0.0-beta.x/guides/is-owner.md
@@ -0,0 +1,132 @@
+# Create is owner policy
+
+This guide will explain how to restrict content edition to content authors only.
+
+## Introduction
+
+It is often required that the author of an entry is the only user allowed to edit or delete the entry.
+
+This is a feature that is requested a lot and in this guide we will see how to implement it.
+
+## Example
+
+For this example, we will need an Article Content Type.
+
+Add a `text` field and a `relation` field for this Content Type.
+
+The `relation` field is a **many-to-one** relation with User.<br>
+One User can have many Articles and one Article can have only one User.<br>
+Name the field `author` for the Article Content Type and `articles` on the User side.
+
+Now we are ready to start customization.
+
+## Apply the author by default
+
+When we are creating a new Article via `POST /articles` we will need to set the authenticated user as the author of the article.
+
+To do so we will customize the `create` controller function of the Article API.
+
+**Concepts we will use:**
+Here is the code of [core controllers](../concepts/controllers.html#core-controllers).
+We will also use this [documentation](../plugins/users-permissions.html#user-object-in-strapi-context) to access the current authenticated user information.
+
+**Path —** `./api/article/controllers/Article.js`
+
+```js
+const { parseMultipartData, sanitizeEntity } = require('strapi-utils');
+
+module.exports = {
+  /**
+   * Create a record.
+   *
+   * @return {Object}
+   */
+
+  async create(ctx) {
+    let entity;
+    if (ctx.is('multipart')) {
+      const { data, files } = parseMultipartData(ctx);
+      data.author = ctx.state.user.id;
+      entity = await strapi.services.article.create(data, { files });
+    } else {
+      ctx.request.body.author = ctx.state.user.id;
+      entity = await strapi.services.article.create(ctx.request.body);
+    }
+    return sanitizeEntity(entity, { model: strapi.models.article });
+  },
+};
+```
+
+Now, when an article is created, the authenticated user is automaticaly set as author of the article.
+
+## Limit the update
+
+Now we will restrict the update of articles only for the author.
+
+We will use the same concepts as previously.
+
+**Path —** `./api/article/controllers/Article.js`
+
+```js
+const { parseMultipartData, sanitizeEntity } = require('strapi-utils');
+
+module.exports = {
+  /**
+   * Create a record.
+   *
+   * @return {Object}
+   */
+
+  async create(ctx) {
+    let entity;
+    if (ctx.is('multipart')) {
+      const { data, files } = parseMultipartData(ctx);
+      data.author = ctx.state.user.id;
+      entity = await strapi.services.article.create(data, { files });
+    } else {
+      ctx.request.body.author = ctx.state.user.id;
+      entity = await strapi.services.article.create(ctx.request.body);
+    }
+    return sanitizeEntity(entity, { model: strapi.models.article });
+  },
+
+  /**
+   * Update a record.
+   *
+   * @return {Object}
+   */
+
+  async update(ctx) {
+    let entity;
+
+    const [article] = await strapi.services.article.find({
+      id: ctx.params.id,
+      'author.id': ctx.state.user.id,
+    });
+
+    if (!article) {
+      return ctx.unauthorized(`You can't update this entry`);
+    }
+
+    if (ctx.is('multipart')) {
+      const { data, files } = parseMultipartData(ctx);
+      entity = await strapi.services.article.update(ctx.params, data, {
+        files,
+      });
+    } else {
+      entity = await strapi.services.article.update(
+        ctx.params,
+        ctx.request.body
+      );
+    }
+
+    return sanitizeEntity(entity, { model: strapi.models.article });
+  },
+};
+```
+
+And tada!
+
+::: tip
+For the delete action, it will be the exact same check than the update action.
+:::
diff --git a/packages/strapi-admin/admin/src/components/LeftMenuHeader/Wrapper.js b/packages/strapi-admin/admin/src/components/LeftMenuHeader/Wrapper.js
index 0b6530f673..20db1a2e4e 100644
--- a/packages/strapi-admin/admin/src/components/LeftMenuHeader/Wrapper.js
+++ b/packages/strapi-admin/admin/src/components/LeftMenuHeader/Wrapper.js
@@ -5,7 +5,7 @@ import Logo from '../../assets/images/logo-strapi.png';
 
 const Wrapper = styled.div`
   background-color: #007eff;
-  height: ${props => props.theme.main.sizes.header.height};
+  height: ${props => props.theme.main.sizes.leftMenu.height};
 
   .leftMenuHeaderLink {
     &:hover {
@@ -18,7 +18,7 @@ const Wrapper = styled.div`
     height: 100%;
     width: 100%;
     text-align: center;
-    height: ${props => props.theme.main.sizes.header.height};
+    height: ${props => props.theme.main.sizes.leftMenu.height};
     vertical-align: middle;
     font-size: 2rem;
     letter-spacing: 0.2rem;
diff --git a/packages/strapi-admin/admin/src/components/LeftMenuLinkContainer/Wrapper.js b/packages/strapi-admin/admin/src/components/LeftMenuLinkContainer/Wrapper.js
index a350a0b4e2..c3963e43d5 100644
--- a/packages/strapi-admin/admin/src/components/LeftMenuLinkContainer/Wrapper.js
+++ b/packages/strapi-admin/admin/src/components/LeftMenuLinkContainer/Wrapper.js
@@ -4,12 +4,12 @@ import PropTypes from 'prop-types';
 const Wrapper = styled.div`
   padding-top: 0.7rem;
   position: absolute;
-  top: 6rem;
+  top: ${props => props.theme.main.sizes.leftMenu.height};
   right: 0;
   bottom: 0;
   left: 0;
   overflow-y: auto;
-  height: calc(100vh - (6rem + 10.2rem));
+  height: calc(100vh - (${props => props.theme.main.sizes.leftMenu.height} + 10.2rem));
   box-sizing: border-box;
 
   .title {