How can I do a payment capture?

Question

I'm working in a custom payment module and I created an authorize transaction using my payment api. How can I capture this payment from admin panel in the order ? I can't see the button to capture payment in the admin panel. In Magento 1.9.x I can do the capture in the invoice of order, in the button "Capture online". How can I do this in Magento 2.3.x ?