Custom target decoy database

[StSchulze]

If I want to use a custom target decoy database, I understand that I need to convert N-X-S/T into J-X-S/T.
But besides that, how do I specify the prefix that is used for decoys or do I need to use a specific prefix so hat pGlyco doesn't build decoys by itself?

[StSchulze]

Just to clarify this issue again:
pGlyco seems to be generating decoys for any provided database.
Is there a way to avoid this so that a custom target decoy database can be used?

[jalew188]

pGlyco2 does not support users to customize target-decoy database currently.