Click the 3 dots near the workspace that you want to share.
Click "Invite Collaborators"
Type the email address of the user with that you want to share your workspace.
Select the role as owner, viewer or editor.
Click the "Invite" button
You can also create a view link for your workspace by activating the "Invite by Link" toggle at the bottom of the pop-up screen. Users with this link cannot have any authority over your workspace, they can only view your workspace and the projects in it.
PS: "Owner" users have all kinds of privileges. Users who are "editors" can rename and edit in the relevant workspace. It cannot delete the workspace, project or table.