Sure. You can also set different level of record locking also.
However, if you are going to have multiple users updating the same database simultaneously, it is recommended that you split the database into a back-end and front-end. The back-end contains all the data, and the front-end contains all the forms, queries, and reports. Each user would have their own copy of the front-end.
If you look in Access' built-in help files, it will tell you how you can split a database.