As a user you have different editing permissions in sheets:
Owner - the person who created the file by default. With this permission level, you can do almost anything in the file, including viewing the content, adding or modifying comments, deleting comments, or even deleting the entire spreadsheet. There is only one person who has the ownership permission level, and you cannot assign this permission to anyone else.
In order to confirm whether you have ownership, open your spreadsheet and head to File → Share. The pop-up should clearly indicate whether you have ownership with the title “Owner” next to your name.
Editor - you can modify the content within the spreadsheet. This includes adding content, editing content, or even deleting content. You can also add or reply to comments. Finally, you can also choose to share the Google Sheet with others.
Let’s say I grant edit access to some of my Sales team members. This means that they can any of the data in the ‘Total sales’ column, or even add data for an entirely new department. They can also comment on cells containing data they aren’t confident is up-to-date, or choose to share the spreadsheet with another Sales team member.
To grant Edit access to someone, head to File > Share. Search for their name or email address in the search field, and click on their profile when it appears. Then, in the dropdown to the right of this search field, click on the Editor permission status. Finally, add a customized message if you wish, and finish by clicking Send.
Comment - you can only view the Sheet and add comments through the commenting feature. You can also reply to other people’s comments. If you want to share the file with someone else, you must send a request to the original owner of the Sheet, who will then grant access.
In order to grant the Comment permission level to people, head to File > Share. Then add the user’s name, click the dropdown menu in the top right corner and select Comment. Again, you can add a customized comment and finish by clicking Send.
Viewer - you have the ability to view the document. You cannot edit, comment, or share the file. You can, however, request the owner to grant them permission as necessary.
Much like the previous permissions, access the permission pop-up by heading to File > Share within your spreadsheet. Add users via their name or email, then select the View permission level. Finish by adding a customized message (optional), and pressing Send.