BedrockCraft is a mod about Bedrock and the void.
Youl'll need another mod that adds a way to get power (Forge Energy / FE) to get started.
The first thing to do is to craft a bedrock breaker. It is capable of breaking bedrock. Simply place it above a bedrock and provide it with much power. It'll break that bedrock and drop it above itself. You can also place a chest on top. Then the bedrock will go there.
If you want to know what you can do with that mod go to the wiki.
Looking for CraftTweaker integration? It's in MoreTweaker
You may use this mod in your ModPack. Please provide a link to this page. (https://www.curseforge.com/minecraft/mc-mods/bedrockcraft)