Before you can move or modify vector objects, you must first select them.
You can select single or multiple objects using a variety of methods. If you already have an object selected, you can quickly select the next or previous object in the z-order (stack).
When shapes are created, a base box will be established on creation to accommodate the range of different potential shape sizes when creating variants of that shape. You can manually swap to a tight bounding box using the Cycle Selection Box option on the context toolbar.
Edit All Layers and Select All
The behaviour of the Select All command depends on the Edit All Layers setting on the Layers panel:
When enabled, the command will select all objects across all layers and sub-layers.
If this option is off, only objects on the current layer are selected. Objects within sub-layers are not selected.
Select Same and Select Object
The Select Same command selects all objects in your document that match an attribute on your currently selected object. You can match by Fill Colour, Stroke Colour, Fill & Stroke Colour, Stroke Weight, Transparency, Blend Mode, Shape, Name, or Tag Colour. This powerful selection method can make bulk changes to your design all at once (e.g., conversion of objects that share a non-global colour to ones that use a global one).
The Select Object command selects all objects of a matching type within your document. For example, you can select all groups, symbols, art text, artboards, pixel layers, unfilled objects, transparent objects, and any objects which do/don't have a stroke, etc.
Both commands also work well in conjunction with each other, allowing you to first group all layers of each fill colour (using Select Same) and then select all of the grouped layers (using Select Object), for example, effectively organising the layers in your image.
To toggle Edit All Layers:
On the Layers panel, click Edit All Layers.
To select an object:
Do one of the following:
With the Move Tool selected, click an object or group on the page to select it.
On the Layers panel, click an object entry.
To select multiple objects:
Do one of the following:
With the Move Tool selected, -click each object on the page in turn to select them.
With the Move Tool selected, drag to draw a marquee around the object(s).*
To select all objects in a layer:
On the Layers panel, click a layer or sub-layer.
To select all objects on a page:
From the Select menu, select Select All.
To select objects (or groups) in a group:
Double-click on the object. If the object itself is in a group, the group will be selected first—double-clicking again will select the object.
To select all objects sharing a chosen attribute with the currently selected object:
With an object selected, from the Select menu, choose Select Same and select an attribute from the menu.
To select all objects of a certain type:
From the Select menu, choose Select Object and select an object type from the menu.