Please 
How i can Add custom fields for individual line in transaction
Read the Guide: https://www.manager.io/guides/10411.
I can’t find transaction line
Please. If there is something like that please tell me
Can’t find where? Did you create a line-item custom field for the transaction type where you want to add the field, as described in the Guide?
I already did. That is what the Guide is about.
You can only add line item custom fields for the transaction types shown under Settings.
Well thank you 