Autosize photo gallery sbeener

Hellow

can somebody please tell me how you can make pictures fit into the MC? my pics are to big, so you can only see the left upper corner of it…
Tha size of the MC I want to get them into is 388,9 by 267,6 & the size of the pics are 640 by 480. When I have to resize all the pics manualy I’ll be busy till the end of the year.

So, does anyone know how to autofit the pics?

Thx already

Sorry if the answer is somewhere else on the forum but I haven’t found it!