# Edit an existing building
## What are elevator and stair groups?
Elevator and stair groups are used to connect the **floors of a building with one another**. When stairs or elevators on different floors are grouped together, this works like a stairwell or an elevator shaft. This allows users to move between floors within the building.
The difference between elevator and stair groups lies in the **accessibility**:\
Elevators are accessible and also allow people with limited mobility to move between floors without difficulty. In the Wayfinding system, users can **choose the option whether they want to use the accessible route**, i.e. the elevator, or the stairs.
## Edit a Wayfinding building
1. Open the menu item **Engineering \[A]**
▷ The "Engineering" workspace opens.
2. Click on **Wayfinding \[B]**
▷ The "Wayfinding " workspace opens.
3. Select the desired building and click **\[C]**
▷ The window **"Edit"** opens
◈ Here you can rename the building, select a different asset, and manage the floors. These are the same settings as in [-> Create a new Wayfinding building with floors](https://docs.buildings.ability.abb/collection/english-v14/documentation/wayfinding/create-a-new-wayfinding-building-with-floors).
4. Click the tab **"Elevator/Stair groups" \[D]**
▷ The "Elevator/Stair groups" area opens **\[E]**.
◈ Here you can view and manage your elevator and stair groups. [-> Create stair groups](https://docs.buildings.ability.abb/collection/english-v14/documentation/configure-a-wayfinding-floor#treppe-aufzug-einfugen)
5. Here you can view your elevator groups and your stair groups. **\[F]** How these are created can be found under [-> Create stair groups](https://docs.buildings.ability.abb/collection/english-v14/documentation/configure-a-wayfinding-floor#treppe-aufzug-einfugen)
6. To remove a group, click the trash can icon **\[G]**
▷ The group is removed. **Attention:** When deleting a group, all associated elevator and stair points are also removed from the floor.
7. Switch to the "Shared usage options" tab **\[H]**
▷ The "Shared usage options" area opens **\[I]**
8. Click the copy icon **\[J]**
▷ The link is copied, allowing you to freely choose the building and the starting point.
9. Click the copy icon \[K]
▷ The link is copied, which makes it possible to freely choose the starting point within this building
10. Click on **"Download QR code" \[L]**
▷ The QR code is downloaded, leading to the view in which you can freely choose both the building and the starting point.
11. Click on **"Download QR code" \[M]**
▷ The QR code is downloaded, leading to the view in which the starting point within this building can be freely chosen.
{% content-ref url="generate-qr-code" %}
[generate-qr-code](https://docs.buildings.ability.abb/collection/english-v14/documentation/wayfinding/generate-qr-code)
{% endcontent-ref %}
{% content-ref url="using-wayfinding" %}
[using-wayfinding](https://docs.buildings.ability.abb/collection/english-v14/documentation/wayfinding/using-wayfinding)
{% endcontent-ref %}
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