If you want to build a business of your own, the most useful thing to bring to a plan meeting is a clear goal statement about employment or economic participation -- written in your own words, but specific enough for the NDIS to fund support against it. A vague wish to "do something for myself" is harder to fund than a goal like "build and run my own small business selling my craft work."
Name the goal clearly
Say what you want to work toward, as plainly as possible: for example, building a website and shop to sell your own work, or setting up a small service business. The more concrete the goal, the easier it is for your planner to connect it to a funded support.
Ask about the right budget line
Ask specifically whether Supports in Employment, within your Core budget, could fund capacity-building help to set this up -- things like a website, booking systems, and marketing, grown together at whatever balance of hands-on involvement suits you. Your planner or support coordinator can confirm whether this fits your situation.
Bring the barrier, not just the goal
Be specific about what part of the work your disability makes difficult. This is what justifies support being funded in the first place -- not a lack of ability to have a business, but a barrier in a specific, nameable part of building one (technical setup, for example, or sustained admin work).
Ask about delivery online
If you are not near a major city, ask whether the support can be delivered online. Many capacity-building supports, including this kind of micro-business support, can be delivered anywhere in Australia -- worth confirming so your plan is not written in a way that limits you to local providers.
For a sense of what this kind of support looks like once it is funded and running, see the NDIS micro business support page.