You need to pay a fee to register at the workshops.
Payment Guide:

step 1: Login to account

step 2: Click on "Pay Fees" and then New Payment:

step 3: Choose your desired workshops and then click on the below icon.
Attention: If you are just attending the workshop, select the entrance like as a photo.

step 4: click on Step 3 (on top of page):

step 5: Choose "online payment from dropdown list and then click on the below icon.

step 5: Now pay the fee.