I found solution in indi code. I attached screenshot from souce code with marked places where you need insert values for your mount. Then, after this changes you need compile sources and install it.
I have NEQ6 mount with belts (2.5:1 ratio) and 0,9° stepper motors, so my final gear ratio is 5:1, which is different then original ratio in this mount.
It is possible in easy way to change ratio in indi to get good working goto and tracking?