# Creating an Assembly on the Library File Management Page

On the library file management page, an assembly can be added by choosing **Add assembly…** from the *Assembly* drop-down list (Figure 1). If the list is long, you may need to scroll to the bottom.

![Figure 1. Adding an assembly on the library file management page](https://1384254481-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FJVEESmJAPppJ3ijFq5aR%2Fuploads%2Fgit-blob-5cd401b11bdea1a1cd29ee81518fc3280a178b9a%2Fadd-assembly-drop-down.png?alt=media)

In the *Add assembly* dialog, choose the **Species** from the drop-down list (Figure 2), followed by the **Assembly** version (Figure 3) and click **Add**. The dialog will automatically load commonly used assembly versions for the selected species (Figure 3). If the assembly version you want does not appear in the list, choose **Other** and type the custom assembly version name (Figure 4). Characters such as $ \* | \ : " < > ? / % cannot be used in custom names. Note that If an assembly version for a given species already exists on your system, it will not appear in the drop down list.

![Figure 2. Add assembly dialog. The species can be chosen from the drop-down list](https://1384254481-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FJVEESmJAPppJ3ijFq5aR%2Fuploads%2Fgit-blob-0d1ea9f08b0ea3d52a6bcafba791dd56e142756c%2Fchoose-species.png?alt=media)

![Figure 3. For the chosen species, commonly used assembly versions can be chosen from the drop-down list](https://1384254481-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FJVEESmJAPppJ3ijFq5aR%2Fuploads%2Fgit-blob-f9657f9036d62f7adf26704406abc93e19a1131c%2Fchoose-assembly-vversion.png?alt=media)

![Figure 4. A new assembly version can be added by choosing Other and typing the custom assembly version name manually](https://1384254481-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FJVEESmJAPppJ3ijFq5aR%2Fuploads%2Fgit-blob-b44f802588a77b43593986c65041d29830f28d74%2Fadd-other-assembly.png?alt=media)

If the species you want to add does not appear in the list, scroll to the bottom of the species list, choose **Other** and manually type the species name and assembly version (Figure 5).

![Figure 5. A new species can be added by typing the name and assembly name manually](https://1384254481-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FJVEESmJAPppJ3ijFq5aR%2Fuploads%2Fgit-blob-b6407a20bff642004436499546c4ff420a479c40%2Fother-species.png?alt=media)

## Additional Assistance

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