By default, only Company and Individual/HUF appears in the Collector/Deductor Type list. You can use F12: Configure option to show all the deductor types for TDS.
To enable all deductor types for selection
1. Go to Gateway of Tally > F11: Features > Statutory and Taxation.
2. Enable the option Set/alter TDS details.
3. Click F12: Configure.
4. Enable the option Show All Deductor type.
5. Press Ctrl + A to accept. All the organisation types will appear in the Collector/Deductor Type list for the option Deductor Type.