You'll need CRM Administrator rights to follow the steps in this article
Step 1: Open a Record
In order to open the Customiser within the CRM, you just need to open the record you wish to change the layout of and click the three dots, as featured in the below screenshot of a Contact:
By choosing the Customise option, the Contact will be shown within an edit view, displaying all of the fields on the current Contact within their relevant groups. E.g. the contact name and phone number is displayed within the Details group.
Step 2: Adding a New Page and/or Group
You can add in a new page by clicking on 'Add Page' on the left-hand side and add in an additional group by clicking the 'Add Group' option where you wish to add the group on a Contact.
Step 3: Editing a Field
To change the display name/label of a field, click on the spanner next to it's current name. This will then open an additional configure window where you can type in the desired display name.
You can also drag and drop any of the fields to different groups. For example, you may wish to move the job title field to the details group underneath the Contact's role.
By clicking add fields on any of the groups, you can add in additional Contact fields to the layout. You will be provided with a list of fields that relate to the Contact, such as the division name.
Step 4: Preview Layout
Once you have finished your layout changes, you can preview the new Contact layout using the Preview option along the top of the Customiser.
This will then show you the Contact with example Contact information displayed.
Once happy with your changes, just click the save icon along the top of the Customiser view.