Welcome to AGM. The first thing you need to do is to follow eternity's tool guide which you can find on this link: animegamemods.freeforums.net/thread/701/tools-eternity .

- Start by downloading xv2patcher and extract its content inside the main game folder (default directory is "Steam\steamapps\common\DB Xenoverse 2");
- Then proceed to download XV2 Mods Installer and Adobe Flex sdk 4.6 (also found in eternity's thread). In this case, extract Adoble Flex sdk 4.6 somewhere (taken from eternity's thread: "Extract it somwhere in your system. Suggested location would be in C:\flex_sdk_4.6 (C or any other drive). (if you follow this advice, the installer will be able to locate it automatically).") and leave it at that. Now proceed to extract the xv2installer too (you can put it into your game folder), beware that some antivirus consider it as a false positive, hence you could make an exception for it into your av;
- Download the 32 BIT VERSION of java, it is still needed even if you should have the 64 version already installed;
- At this point All you have to do is to install through xv2inst the mods you have downloaded. They came in a fancy .x2m format which can be installed and associated with xv2inst.

Almost every mod is installed this way.

No mod (as long their descriptions don't say otherwise) will affect the dlcs in any way, they will still be there, available to you, be them stages, PQ or characters.

When adding characters you have multiple options, like adding new slots and make them a separate characters, or install them over existing slots as costume characters (this make the roster more compact and ordered, there is no need to have multiple slots of goku when you can just put them all inside the original goku slot, without overwritting the original).

As a last note, I don't want to sound like a dick, but eternity did already cover most of the things you asked for, which could have been simply found through the search feature. Since you are just new here I wanted to point that out .

For further info, please refer to this thread animegamemods.freeforums.net/thread/821/xv2-mods-installer, which goes in depth details, should you face new issues.

Quote gotten from the XV2 Mods installer topic, first post in, there are 3 references to the program and how it's a mod installer, and how it works. It doesn't mention anything about having to place the .x2m files in a specific place before installing them. You could always try running the program first too, so you can find out what it does and how it works.

With all that said though, welcome to the forum.

The XV2 mod installer installs characters, skills and outfits.

You won't need XV2savedec or xv2savown. They're separate programs.

XV2 Mod installer doesn't edit your save.