In Flows, is it possible to create a dependent picklist inside one screen with out using two screens?
So far I know we need to use two screens as of now. Guess it is limitation as of now. You can vote this idea, if that is your problem. https://success.salesforce.com/ideaView?id=08730000000hqtrAAA
We've published an unofficial Flow Screen Component that solves this problem. Learn more about it here: https://medium.com/@alexedelstein/dependentpicklists-a-flow-screen-component-c97dcee1796
Salesforce has also published a Flow Component (Lightning-only) for dependent picklists in Winter '19:
Unfortunately it doesn't support dependent multi-select picklists as of yet..
Flow does not support dependent picklist because at the time you select the value of the field the flow screen is not refreshed. so we use the new screen for populate the value.
There is now a standard flow component for dependent picklists as of Winter '19. Check out this video on how to create a dependent picklist. https://youtu.be/FSQ52gVOgcY
Salesforce Documentation https://help.salesforce.com/articleView?id=flow_ref_elements_screencmp_dependentpicklists.htm&type=5 https://developer.salesforce.com/docs/atlas.en-us.salesforce_vpm_guide.meta/salesforce_vpm_guide/vpm_designer_elements_screen_dependentpicklists.htm