Yes, in eMAM you can set prefix for subclip names.
In the Subclips widget, click on 
Set Prefix option under the pull down menu.

Set Prefix option allows eMAM users to set prefix for subclips which will be auto populated for subsequent subclips.
Enter the 
Standard prefix & TX prefix name and click on 
Add.

After
 setting this prefix, when users add new subclips, the subclip name will
 be starting with this prefix and will be displayed in this convention 
prefix_1, prefix_2. e.g.: STAD_1, STAD_2, STAD_3 and so on.
