If your users are set up under different Joomla ACL groups, under the Event, click on the Discount Setting tab, ctrl-click the groups you want to discount (ctrl-clicking selected multiple groups), then enter the discount amounts into the Discount Amounts box, enter a comma between the different values. This is done at a per-event level, so it can be easily customized.
Refer to
eventbookingdoc.joomservices.com/basic-s...nt#discount-settings
If you don't have Joomla user groups set up, set your event to $100, then create a Custom Field (maybe a dropdown), enter values like Non-Member / Regular Member ($25 off) / Life-Time Member ($50 off) (one per line), turn on Fee Field, and enter discounts such as 0 / -25 / -50 (one per line) and assign it to the event (or category, depending on your global Custom Field assignment option in Config). You might want to resort the Custom Field order so that the discount appears at the top of the form instead (tip: click on the order heading before trying to sort!). The user can then select the discount. This would have to be configured for each discount amount and then added to the event (category). If you need to do a different discount amount, you would need to create a new Custom Field and associate that with the event (category mode would start to get sloppy because you'd have 2 discounts applied!!) instead.
Alternately, you could set your event fee to $0, and make your custom fee field charge 100 / 75 / 50, but then the event displays the cost of $0 or FREE in the details listing... which you may not want.
Refer to
eventbookingdoc.joomservices.com/basic-s...ds/custom-fee-fields
