I have used Tale Spire to run my campaign, creating and developing huge amounts of scenarios, for quest, role playing and fighting encounters, etc. The following images show various examples of scenarios.
If you wish to know more about the level design framework used for the quest, the documentation is in their respective quest stories linked at the very first page of this whole document
Also I want to mention that creating this scenarios require a huge amount of time and effort, so in order to be able to prepare Sessions properly I did use assets for tale spire, this has help me to create and modify levels faster, without the need to create any resources from 0.
Resources Page: Welcome to Tales Tavern! - Tales Tavern
Residence and players business, also central hub for players to acquire basic resources
The Campaign’s First Dungeon where player need to rescue Volo’s acquaintance from Xanathar