Combining two macros into one app

unknown

I have two macros.

1) First macro has 1 input file say A

2) Second macro has two input files X and Y.

Now I have to make an app such that if user puts file A in the app the first macro (wf) will run. If the user puts file X (the main file), the user will be asked to input file Y and so the second macro (wf)  should give output. 

How can I do this? 

OTrieger

@Inactive User 
You can create the User Interface in a way that you create 2 options, 1 select file A or 2 select X and Y. You can create Radio Buttons, 1 for each option and based on the selection of them a file browser or browsers will open like in a drop box.

In the workflow you can create a file count and if count 1 disable the X Y macro, just put it in a Container, same for the other macro if Count=2 disable the container with macro A