If your rates are different per durations, here is how to set it up in Fons. If you just charge for example $90 for 60 minutes Fons will automatically figure out the rate for 30 minutes of $45, however if you charge $85 for 60 minutes and $45 for 30 minutes, see below how to this up:
2. Next click on "Settings" and click the gear icon in the "Per Appointment" section and fill in your rate. Click "Save Changes". For the above example you would fill in $85.
3. Once Step 1 & 2 are complete, navigate to "Clients" and select a client that you would like to set-up for 30 minute appointments. For the above example above you would fill in 30 minutes and for the default hourly rate fill in $90. This will bill the 30 minute appointment at $45.
*Alternatively, you can create an appointment, fill in your duration and appointment cost.