> For the complete documentation index, see [llms.txt](https://help.sbtinstruments.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.sbtinstruments.com/advanced/advanced-skill-level-vs-advanced-feature.md).
# What requires a custom solution
## The two axes
Put skill level on one axis and feature category on the other. A simple rule appears: anything advanced, on either axis, needs a custom solution.
Anything in the advanced skill level or the advanced feature category needs a custom solution.
* **Standard support.** Basic features at the beginner or intermediate skill level. This is the out-of-the-box path: standard parts, standard workflows, fully covered by the help center and our support team.
* **Requires a custom solution.** Anything that is advanced, whether by skill level or by feature category. Here the standard support ends and you need our specialist team instead.
## Advanced skill level vs. advanced feature
The word "advanced" shows up in two different ways across this help center. They are easy to mix up, so here is the difference.
* An **advanced skill level** describes a *task*. It tells you how much skill the task assumes. It is the top rung of the [BactoBox® skill levels](/advanced/bactobox-skill-levels.md), above no skill requirement, beginner, and intermediate.
* An **advanced feature** describes a *capability*. It is something BactoBox® can do that goes beyond standard, everyday use. You will spot it by the advanced feature 🧩 callout on the page.
One is about how hard something is to do. The other is about what kind of capability you are reaching for. A task can be advanced in skill, advanced in feature, or both.
## Why both lead to a custom solution
An advanced feature sits outside everyday use. So we tune it to your case rather than ship a one-size-fits-all guide. An advanced-skill task usually means a non-standard sample or method. That needs the same hands-on, case-by-case support. Either way, the answer is the same: a [custom solution](/advanced/what-is-a-custom-solution.md).
{% hint style="info" %}
This is an advanced feature. We only support advanced features through a *custom solution*. Contact SBT for details.
{% endhint %}
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