Hi Liquidxxvi,
Welcome to Affinity Forums :)
Currently Affinity Photo doesn't provide a way to automatically align and blend multiple exposures, like other HDR software. You can however do it manually.
Multiplicity / sequence photography can easily be achieved with the current toolset. We also have introduced support for image stacks and panoramas in the latest Beta. The Mac App Store will be updated in a few weeks with the same features.
For more tutorials check our website and Affinity Review (eZine).