Create new Users & assign permission.

First you have to login to your server with administrator password. go to the active directory window in server manage.
Once we’re inside the Active Directory Users and Computers snap-in, we’ll need to expand the domain in which we want to create the user, and right-click on the Users folder. We’ll then select  New User.

The New Object – User box will pop up and require you to put in the user’s name and create the user logon. You’ll need to use a standard method of creating user logon names, as this will cause much less confusion in the future. If you have a small network, you may want to just stick to using the first initial and last name because it’s shorter. If you anticipate that your network will grow quite large, the standard advice is to use the full first and last name separated by a period, as we’ve done below.

Next we’ll give the user an initial password, and make sure to have them change it as soon as they first logon.

When we’re finished, we’ll get a nice summary of our work.

When we go back to the Users folder in the domain, we can see our newly created user.

Once we’ve created a user, there are many things that we’ll need to do with them in order for them to be useful, like adding permissions and security groups, but at least the operation for spawning them is simple and straightforward.

Assigning Permission

Ownership may be taken, when permitted, using the properties dialog of the file or folder in question. This can be accessed by right clicking on the file or folder in Windows Explorer, selecting Properties from the menu and then clicking on the Security tab. On the Security page of the properties dialog, click on the Advanced button to access the Advanced Security Settings dialog and then select the Ownership tab to display the following dialog:

As illustrated in the preceding figure, the file's current owner is bill and the option is available for user nas to take over ownership of the file. To take ownership, click on the Edit button to display the following dialog box where ownership may be changed:

To take ownership, select your user name from the list and click on Apply. To transfer ownership to a different user, either select the name from the list, or search for the user by clicking on the Other users or groups... button. Select the required user and click on Apply to commit the transfer.