manage several photo's at once

In Lightroom Classic there are several ways to apply editing onto multiple photos. 

• One way is the Quick Develop panel in the Library module. This does not offer all of the same adjustments that you see in Develop.
• Another way is to include particular adjustments and settings into a custom Develop Preset, and then apply this preset onto various photos. The key to these presets IMO is that they should be quite targeted, which means, only have the directly relevant aspects of editing checked when you make them. This can include the selection of a Profile at the same time as whatever other kinds of adjustment you want. 
• There is an option to process a successive photo the same as the 'Previous' one worked on, but this method is not one I personally prefer.
• Another way is to Copy (again, you would choose which kinds of setting and adjustment you want to include, or not, in this operation) edits from the then active image, and then Paste those edits onto a highlighted set of photos.
• Another way is very similar: the Sync feature (repeating chosen aspects of editing on the current active image, onto all other currently highlighted ones too).
• Another way works a little differently, in that you would defer doing the editing on the sample image until after turning on the AutoSync feature - after which anything done to the active image is automatically and immediately applied to all other currently highlighted images too. Thus, you in effect edit the whole group together. This mode is powerful but also potentially dangerous so best 'safety' advice while getting used to this feature, is to always switch it off again promptly. 

The Lightroom Classic help system, also video tutorials etc, should talk you through these different techniques. They are to some extent different means of doing similar things, so you can try out which method you personally prefer.

What software are you talking about?