Image Gallery with Albums

Hi , I am new to Sitefinty and we have a client which needs the Image Gallery to be categorized using albums as the URL below :

www.imdaad.ae/gallery.html

So we have created a custom module to have the Album title , Date along with multiple images .

but we noticed that we are unable to select multiple images at once ( so if they have 30 images they need to select the do this process 30 times!)

I think this is not usable at all . and I am not sure if there any workaround to overcome this issue . or building the module in a better way . please advise .